Kyocera C-901 preamplifier

 

Control Preamplifier

Featuring Direct Coupling from  Front End to Output Terminals

 

Features:

Input Selector (Phono 1, Phono 2, Tuner, Aux)

Phono Selector (MC and MM cartridge)

Tape Monitor (1, source, 2)

Tape Copy (1 - 2; off; 2 - 1)

Mode (Stereo, Mono)

Muting (0, -20 dB)

Subsonic Filter (On, Off)

Bass, Mid, Treble (Detented variable)

Tone Switch (On, Off)

Bass Center Frequency (100 Hz, 50 Hz)

Mid Center Frequency (1 kHz)

Treble Center Frequency (10 kHz, 20 kHz)

Pre Out Switch (On, Off)

Inputs (Phono 1 & 2, Tuner, Tape 1 & 2, Aux)

Outputs (Tape 1 & 2, Preout 1 & 2)

Phones Jack

 

Specifications

Input Sensitivity/Impedance

Phono 1, 2 MC :  120 µV/1 K Ω

Phono 1, 2 MM :  2,5 mV/27 k Ω - 47 k Ω  - 100 K Ω

Tuner Aux, Tape 1, 2 :  150 mV/130 K Ω

Total Harmonic Distortion (20 Hz - 20 kHz)

Phono MC (1,5 V output) :  0,007%

Phono MM (13 V output) :  0,007%

Tuner, Aux, Tape (1,5 V output) :  0,007%

Tuner, Aux, Tape (13 V output) :  0,007%

Rated Output Power/Impedance

Rec Out :  150 mV/600 Ω

Pre Out :  1,5 V/22 Ω

Signal-to-Noise Ratio

Phono MC :  70 dB

Phono MM :  86 dB

Tuner, Aux, Tape :  110 dB

Frequency Response

Phono MC (20 Hz - 20 kHz) RIAA ±0,2 dB

Phono MM (20 Hz - 20 kHz) RIAA ± 0,2 dB

Tuner, Aux, Tape (20 Hz - 20 kHz) +0 -0,2 dB

Tuner, Aux, Tape (5 Hz - 100 kHz) +0 -1,0 dB

Maximum Input Level

Phono MM, MC :  1 kHz (RMS)

Maximum Output Voltage:  13 V

Tone Controls

Bass ±10 dB at 100 Hz - 50 Hz

Mid :  ±10 dB at 1 kHz

Treble :  ±10 dB at 10 kHz - 20 kHz

Subsonic Filter:  15 Hz (12 dB/oct)

Muting:  -20 dB

Power Supply:  AC 120 V, 60 Hz

Power Consumption:  80 W

Dimensions (W x H x D):  18-7/16" x 5-3/16" x 14-7/16"

Weight:  15,4 lbs

Kyocera B-901 power amp

 

MOS FET Power Amplifier

Incorporating Direct Coupled Triple Push-Pull MOS FET Power Output

 

Features

Powe Switch

Protection Indicator

Peak Indicator

Input Jack

Input sensitivity switch

Power Indicator

Speaker terminals

 AC outlet

 

Specifications

Power Amplifier

Power Output

130 W + 130 W at 8 Ω , 20 Hz - 20 kHz

180 W + 180 W at 4 Ω , 20 Hz - 20 kHz

Total Harmonic Distortion

0,01% at 8 Ω , 20 Hz - 20 kHz

0,02% at 4 Ω , 20 Hz - 20 kHz

Frequency Response

20 Hz - 20,000 Hz +0 -0,2 dB

5 Hz - 100,000 Hz +0 -1,0 dB

Signal-to-Noise Ratio:  -120 dB

Hum and Noise:  0,2 mV

Damping Factor (8 Ω , 50 Hz):  80

Input Sensitivity/Impedance"  1,5 V; 3,0 V /30 k Ω

Power Supply:  AC 120 V, 60 Hz

Power Consumption:  500 W

Dimensions (W x H x D):  18-7/16" x 7-3/16" x 15-11/16"

Weight:  48,4 lbs

 

Sony TA-F444ES amplifier

ES-Series Integrated Amplifier

Specially designed for the demands of digital audio

 

Digital audio places stringent demands on the rest of a stereo system. That's why Sony created the TA-F444ES - it matches digital audio's impressive performance, in terms of dynamic range, stereo separation, and low noise and distortion. Many features contribute to this superior performance. Audio Current Transfer (ACT) uses current amplification to reduce crosstalk and improve separation. High dynamic headroom improves dynamic range. Sony's Legato Linear design eliminates switching and crossover distortion. A Linear Gain volume control assures identical performance at all listening levels. These features all contribute to the amp's outstanding performance with digital sources.

 

The best way to demonstrate the terrific performance of the TA-F444ES is to put it through a workout with a Sony CD player. Choose a Compact Disc that features wide dynamic range and low noise. Play the amp very loud first. Let the customer experience the dynamics - be sure he hears both very loud and very soft passages. During a quiet passage, point out the lack of noise. Then turn the volume down to a quieter level. Explain how the performance remains outstanding; i.e. separation, noise and dynamic characteristics are all still superb. Let the customer enjoy the "feel" of the amplifier, and experience its performance on his own.

 

Features:

Record output selector - permits the user to listen to one source while recording another

Defeatable bass boost - provides additional bass response for speaker which require it

Tone defeat switch - eliminates the tone control circuitry from the audio signal path

Two tape monitor loops - with tape dubbing in both directions

Soft touch controls - for function selection makes switching to another signal source easy and elegant. LEDs indicated which source is in use

4 position speaker selector switch - A, B, A + B, Off

Front panel headphone jack

Oversized volume control knob

ACT "Audio Current Transfer" - uses current amplification to reduce internally generated distortion

Linear Gain Volume control - assures consistently outstanding performance at all volume levels

Legato Linear amplifier circuitry - eliminates switching and crossover distortion

Switchable subsonic filter - eliminates the effects of turntable rumble and other subsonic distortion

Consistent low impedance performance

 

Specifications

Continuous Power Output RMS : 

80 watts per channel, both channels driven into 8 Ω  from 20 Hz to 20 kHz, at no more than reted T.H.D.

80 watts per channel, both channels driven into 4 Ω  from 20 Hz to 20 kHz, at no more than rated T.H.D.

Total Harmonic Distortion : 

0,004% (from 20 Hz to 20 kHz at rated output , 8 Ω )

0,006% (from 20 Hz to 20 kHz, at rated output, 4 Ω )

Intermodulation Distortion:

0,004% (60 Hz : 7 kHz = 4 : 1, at rated output , 8 Ω )

0,006% (60 Hz : 7 kHz = 4 : 1,, at rated output, 4 Ω )

Power Bandwidth (IHF): 

5 Hz - 0 kHz (40 watts, 8 Ω , 0,004% T.H.D.)

 5 Hz - 80 kHz (55 watts, 4 Ω , 0,006% T.H.D.)

Dynamic Headroom:  1,8 dB (4 Ω or 8 Ω , IHF-1978)

Damping Factor:  125 at 1 kHz, 8 Ω

Residual Noise:25 µV (A-weighted, 8 0hm)

Slew Rate:  125 Volts/µsec (250 Volts/µsec, IHF)

Dynamic Range (Tuner, Tape, Aux, CD) :  120 dB

Frequency Response

Phono :  RIAA standard ±0,2 dB

Tuner, Tape, Aux, CD :  20 Hz - 200 kHz -0,3 dB

Channel Separation

Phono MM :  95 dB

Phono MC :  80 dB

Tuner, Tape, Aux, CD :  100 dB

Input Sensitivity/Impedance/Capacitance

Phono MM :  2,5 mV/50 k Ω

Phono MC :  170 µV/100 Ω  at 40 Ω  setting (170 µV/400 Ω  at 3 Ω  setting)

Tuner, Tape, Aux, CD :  150 mV/50 Ω

Signal-to-Noise Ratio

Phono MM :  83 dB (IHF-A) at 2,5 mV [87 dB new IHF]

Phono MC :  73 dB (IHF-A) at 0,125 mV [70 dB new IHF]

Tuner, Tape, Aux, CD :  102 dB (IHF-A) [97 dB new IHF]

Maximum Input Capability

Phono MM :  150 mV

Phono MC :  9 mV

Tone Controls

Bass :  ±8 dB at 60 Hz

Treble :  ±8 dB at 25 Hz

Bass Boost Switch:  +4 dB at 50 Hz

Subsonic Filter:  6 dB/ocave below 15 Hz

Speaker Impedance:  4 - 16 Ω

Power Outlets:

Switched :  (2) 100 Watts, max. ea

Unswitched:  (2) 100 Watts, max. ea.

Power Supply:  120 Volts AC, 60 Hz

Power Consumption:  260 watts

Dimensions (W x H x D):  430 x 130 x 430 mm (17" x 5-1/8" x 17")

Weight:  13,5 kg (29 lbs 13 oz)

 

Sansui SP-X9700 speakers

High-Resolution 4-Way, 7-Speaker System

Really Rich Bass - the 17-inch woofer has non resonant frame and a cone that could move mountains

If you could ut enough power into the Sansui SP-X9700  you probably could move mountains, or at least create a couple of man-sized quakes. As it is, the very high power capacity of the system is more than enough to handle most of today's mammoth power amps and receivers - 280 watts.

Woofer design and construction in such a large system naturally need to be fully up to state-of-the-art. Standards , if you want to avoid spurious vibration, excessive heat and the various kinds of distortion they lead to. Sansui forms the cone of a special pulp formulation, gives it a carefully calculated curvature, adds corrugations to break up damaging surface waves, and thus preserves all the dynamic punch of your music's "bottom end" with ease.

The bobbin in the woofer voice coil is of luminum for quick heat dissipation the coil itself is coated with a heat-resistant film. Together they provide high linearity up to a tested level of 200 degrees Celsius

For the magnetic circuit we've set a high flux density of 11,300 gauss and thus achieved mor-than-adequate drive and damping. Of special note is the concave recess at the top of the center pole, helping to keep the top plate magnetically saturated for the reduction of harmful 3rd harmonic distortion. Musicality is richer at all input levels.

Finely, frame dynamic were analysed in several prototype models until we eliminated destructive resonance. The entire woofer assembly is structurally sound - and no amount of high-amplitude input up to the rated capacity can cause "woofer buzz".

 

Close-up Midrange: Special Sansui techniques preserve the intimacy of vocals, fidelity of fundamentals.

High efficiency is just one of the design criteria met and surpassed by the 8-inch midrange speaker unit in the Sansui SP-X9700. to preserve the natural "close-up" feeling of vocals, and to retain a high degree of fidelity with the fundamentals of musical instruments, we chose a cone pulp mixture of highly elastic, thermally stable fibres.

The new method of pressing the cone has ensured a high Signal-to-Noise Ratio and a flat Frequency Response over the Frequency Range assigned to this unit. Sound transparency and crisp, intimate "presence" are the benefits,

For increased power handling, the same techniques used in the voice coil and magnetic circuit of the woofer are again employed here harmonic distortion is discouraged even when the maximum input of 280 watts is introduced over long period of time.

 

Cracklin Clean Highs: Well-defined high-frequency reproduction is sent into every corner of your room.

Dual horn tweeters cover the frequency range between where the midrange leaves off and the supertweeters take over. This is the high range where musical definition is determined for cymbals, reeds, strings and the upper harmonics of most other instruments, electric and electronic instruments included.

The two horn tweeter are identical, and are connected in parallel to increase efficiency and power handling capacity. Each has a powerful magnetic circuit and a phenol-resin diaphragm, a precision-machined zinc die-cast acoustic equalizer is positioned as closely as technically possible to the diaphragm to maintain phase integrity and extend the high-frequency limit. The drivers are then coupled to non-resonant zinc die-cast horns formed with sectoral fins to improve dispersion and transient response.

 

Triple Superteeters: What you can't hear Can hurt.

The three precision supertweeters in the Sansui SP-X9700 cover the extreme high-frequency range clear into the supersonics up to 23,000 Hz with accuracy and fidelity. You may argue that you can't hear the super-highs, but our tests have shown that when they are reproduced with integrity, the frequencies you Can hear come out cleaner, crisper and more musical.

Again special pulp is used in the cone diaphragms, which are then installed with mylar center caps for phase linearity. The two of supertweeters is mounted on a unique tri-sided projection on the front baffle so that the super-highs are bearned into every corner of your listening room.

 

Level Control: Special low-distortion network improves musicality.

Three positions are provided on the front-panel Level Control: Natural;  Soft-1, and Soft-2. its esy to match the speaker system's response to yur acoustic environment, using the Soft positions when you feel that highs are too "brilliant". The control works from a newly-designed crossover network featuring low electrical loss, high power handling and low distortion.

 

Real-Wood Grille: Sansui's traditional Kumiko design adds distinction

High-density "acoustic" particleboard forms the massive bass reflex enclosure of the SP-X9700 for resonance free reproduction. Standing waves are damped by two types of sound absorbent inside. The exterior cabinet is finished with simulated walunt grain and the removable real-wood grille, with a beautiful hand-carved traditional "Kumiko" pattern grille.

 

Specifications

Speakers

Woofer :  1 x 432 mm (17") cone-type

Midrange : 1 x 208 mm (8") cone-type

Tweeter :  2 x 171x59 mm (6-11/16" x 2-5/16") horn-type

Supertweeter 3 x 49 mm (1-15/16") cone type

Max. Input Power :  280 W

Impedance:  8 Ω

Sensitivity:  100 dB (JIS at 1m distance

Frequency Range:  22 - 30,000 Hz (normal listening room)

Crossover Network:  4-way, 16 dB/oct.  12 dB/oct;  6 dB/oct.

Crossover Frequencies:  1,000 Hz, 7000 Hz; 15,000 Hz

Dimensions (H x W x D):  688 x 470 x 270 mm (27-1/16" x 18-1/2" x 10-5/8")

Weight: 20,3 kg (44,8 lbs)

Finish: simulated Walnut grain

 

Sansui SP-3500 speakers

4-Way 6-Speaker Multi-Direction Speaker System

Perhaps the most timely speaker system ever introduced, this new 100 watt Multi-Direction (MD) system takes you beyond the reproduction of sound source points to an incredibly lifelike method of reproduction approximating that of an original sound field. This makes the SP-3500 the foremost system available today for the new age of 4-channel stereo. The secret to the SP-3500's living sound lies in its MD System, a new way of angle-mounting speakers within the enclosure to re-create within the listening room the complex interference of sound waves present in the original sound field. All six of the SP-3500's speakers, including a newly developed 14-inch woofer, were specifically selected to achieve this effect. Even Sansui's famed Kumiko fretwork grille has been redesigned in the SP-3500.. It now is gracefully curved to add to the over all elegance of this new system.

 

4-Way, 6-Speaker, 100 Watts

The SP-3500 is of a 4-way 6-speaker design, consisting of a large 14-inch high-cut type, high-compliance woofer, a 4-1//2- by 2-inch horn midrange with a sound diffuser and pair of "multi-directional" 4 -inch cone midranges with aluminum dome radiators,

Plus a pair of 2-ich MD system horn tweeters for the highs. Thanks to the use of specially constructed rugged voice coils, the system is able to handle up to 100 watts in power input.

 

Multi-Directional System

This is a new way of mounting individual speaker units inside a speaker system, to better reproduce in your own room the exciting liveliness or sense of "presence" experienced in a concert hall or jazz club. The MD System is based on increasing the interaction of sound waves by criss-crossing the sounds emitted by the individual speakers. This result in a unique sound field effect unobtainable by simply widening the dispersion of sound. In the MD System, midrange and tweeters are angle-mounted so that they produce an acoustic interference fringe - a whirlpool of sound - inside the listening room.

 

Newly Designed Woofer

The newly developed high-cut type woofer of the SP-3500 permits the output signal of the amplifier to be fed directly into the woofer, bypassing the crossover network. The result is a very smooth frequency response even at very low frequencies, which in turn results in extremely well-damped rich bass sound. This special design is unique with Sansui. Another outstanding advantage of this woofer is found in its high Compliance. The woofer achieves a stable piston action with superior transient response even in the face of big power inputs. Quality copper coil, aluminum bobbin, and a cone of carefully selected pulp help to improve the speaker's frequency response as well as its sound diffusion at extremely low frequencies.

 

Horn Midrange

Sansui engineers have placed a lot of emphasis on the midranges - those important frequencies where the vast majority of musical instruments perform - in the SP-3500. one of the speakers used is a 4-1/2- by 2-inch midrange for the frequencies from 2,000 to 6,500 Hz. While the cut-off frequency of this speaker is set as low as 800 Hz, it is intentionally used in the higher frequencies to eliminate the obnoxious metallic feeling unique to a horn speaker. A short-cut, exponential type die-cast from aluminum, this speaker is fronted with a sound dispersion characteristics. It also utilizes a 25 mm diameter titan diaphragm for top timbre qualities.

 

Cone Midranges

Two 4-inch cone midranges are mounted at an interior angle of 15 degrees to the front as a part of the SP-3500's MD System. Together with the horn midrange speaker, they handle the midrange sound in an "acoustic staggering system" for greater depth and richness of reproduced  sound. Each of the cone speakers has a newly developed concave aluminum dome radiator directly mounted on its voice coil bobbin. This permits a very smooth transition to the tweeters with virtually no phase agitation, and helps to improve the diffusion of reproduced sound as well. Designed to effectively diffuse radiator heat, each speaker is able to withstand big power input. The rear of each speaker is sealed with big-cavity plastic covers lined with abundant acetate sound absorbent to completely prevent woofer interference.

 

Tweeters

The SP-3500 also employs a pair of horn tweeters. Positioned just like the cone midranges, the two achieve the excellent sound dispersion qualities unique to the MD System. Each tweeter is a new concept horn speaker which is responsible only for frequencies over 6,500 Hz. Transition to the midranges is exceptionally smooth. Each tweeter make use of a 19 mm diameter polyester diaphragm to realize pleasant, ight and transparent timbre.

 

Newly Developed Crossover Network

The SP-3500 is equipped with a high-performance Loudness Contour type network utilizing an ideal E-type ferrite core and a printed circuit board for greater reliability. In addition, it is provided with level controls for the midranges and tweeters/ of a unique 3-step (Soft, natural and Clear) "tap-down" switch design, these permit accurate level control and are relatively free from the faulty contact and performance-deterioration so common to the previous resistor-type attenuators. They permit selecting the tonal quality best suited to the acoustic condition of the room or the listener's preference.

 

Bass-Reflex Type Chipboard Enclosure

The speaker enclosure adopts a damped bass reflex design, making use of two pipe ducts and combining the advantages of both the air suspension and bass reflex designs. It completely avoids an unnatural increase in sound pressure at low frequencies and unpleasant "cabinet resonance", and offers a flat frequency characteristic and a very low distortion factor. Manufactured of solid chipboard, covered with open=pore finished natural walnut, the rugged enclosure is able to reproduce the heavy rich bass of a pipe organ or any other instrument.

 

Curved Kumiko Fretwork Grille

The SP-3500 is graced with a beautiful hand-carved "Kumiko" fretwork grille like other Sansui speaker systems. The difference, however, is that it is curved for still better appearance and a sound diffusing effect. It adds to the decor of the room more than ever.

 

Pushbutton Connection Terminals

Connections are made almost effortless with the SP-3500, thanks to the adoption of fool-proof one-touch pushbutton type connection terminals; just push the terminal button, put end wires in opening, and release button. This system also minimizes the possibility of short circuits at the speaker terminals

 

Specifications

Speakers

Woofer :  1 x 350 mm (14")

Midrange 1  : 2 x 100 mm (4") cone-type

Midrange 2 :  1 x 100x50 mm (4" x 2") horn-type

Tweeter :  2 x 50 mm (2") horn-type

Power rating:  100 W (Peak)

Impedance:  8 Ω

Sensitivity:  100 dB/1W/1m distance

Frequency Range:  40 - 20,000 Hz (anechoic chamber)

25 - 20,000 Hz (normal listening room)

Crossover Network:  4-way 12 dB/oct parallel type

Crossover Frequencies:  700 Hz; 2,000 Hz; 6,500 Hz

Dimensions (H x W x D):  640 x 450 x 2905 mm (25-1/4" x 17-3/4" x 11-7/8")

Weight: 26,4 kg (58,1 lbs)

Finish: Walnut open pore

 

Sony TC-K96R cassette deck

Automatic Reverse Stereo Cassette Deck

The Tone Controls-K86R offers outstanding Sony cassette-deck performance with an unprecedented degree of operating convenience. Automatic reverse is provided in both playback and record modes, and both directions of tape travel, so you never have to touch the cassette to change tape sides. The K96R also includes a remote control capability for complete record playback control up to 16-feet away from the unit. And, of course, the K96R features Sony dependability - dependability that's based on over 30 years' experience in recording technology and magnetic tape production. So il you're looking for top performance and automatic convenience, the K96R is the deck to count on.

Features:

Automatic reverse in both playback and record modes, so cassette never has to be turned over manually

Microprocessor-controlled, pre-selected record/playback mode, with positions for repeating complete tape three times, repeating complete tape once, or just playing or recording one tape side a time.

Roto bi-lateral, ferrite-and-ferrite record/playback head, for uniform magnetization in both directions of tape travel

New, Sony developed BSL (Brushlee and Slotless)capstan-drive motor, with built-in frequency generator.

Separate BSL reel-drive motor for even tape tension

All operational controls mounted on removable front panel, giving remote-control capability up to 16 feet away

Solenoid-assisted tape-mode selectors, with illumination when individual transport function is engaged

Logic-controlled tape transport for intermode switching without going through stop position

Front-loading, front-panel control convenience

Dolby noise reduction system

Switchable FM multiplex filter for Dolby recording of stereo FM broadcasts

Three-position bias and equalization switches for normal, ferri-chrome (FeCr) and chromium dioxide (CrO₂) tapes

Standby capability for timer-activated record or playback

Rec-mute for instant muting during recording

Three-digit tape counter with automatic memory stop or play

Large, easy-to-read VU meters, plus three LEDs for peak level indication

Line and microphone mixing, with separate level controls for each channel

Headphone/Line output level control

All-mode automatic shut-off

Air-damped cassette compartment for smooth eject

"Punch-in" recording capability via logic control

Removable cassette compartment lid for easy maintenance

 

Specifications

Tape Type:  Compact cassette, 4 tracks, 2-channel stereo

Tape Speed:  1-7/8 ips

Heads: 1 x Rec/Pb head; 2 x Erase heads for each direction

Motors:  Two

Servo System:  Frequency

Drive System: Single-capstan for each direction

Fast winding time:  85 sec C-60 cassette

Wow and Flutter:  0,05% WRMS

Frequency Response:

FeCr Tape :  30 Hz - 16 kHz ±3 dB

CrO₂ Tape :  30 Hz - 15 kHz ±3 dB

Normal Tape :  30 Hz - 13 kHz ±3 dB

Signal-to-Noise Ratio (Dolby off, peak)

FeCr :  59 dB

CrO₂ :  55 dB

Normal :  53 dB

Total Harmonic Distortion :  1,3%

Input Sensitivity/Impedance

Microphone :  0,25 mV/low

Line :  77,5 mV/100 k Ω

Line Output Level & min. Load Impedance

Fixed :  0,435 V/ 10 k Ω

Variable :  0,0775 - 0,775 V / 10 k Ω

Headphone Impedance:  Low

Bias Frequency:  106 kHz

General

Power Requirements:  AC 120 V, 60 Hz

Power Consumption:  30 W

AC Convenience Outlets:  1 unswitched, 300 W max.

Dimensions (H x W x D):  6-1/8" x 18-1/8" x 12-7/8"

Weight:  20 lbs 12 oz

Accessory:  16-foot remote control cable

Tannoy Venus V-30 speakers

SyncSource time compensated crossovers give realistic three dimensional images.

Soft dome tweeters for accurate high frequency performance with wide dispersion

Specially shaped acoustic matching plate provides smoother high frequency response

Heavy-duty internal wiring reduces resistance losses.

 

Polyolefin copolymer bass cone, 25 mm (1") voice coil and dust dome size matched to system characteristics, to give full uncoloured bass performance

Walnut veneered, high density particle board construction. bitumen pads and sound absorbent foam ensure a tightly damped cabinet

Performance

Power Handling:  10 -100 watts

Sensitivity:  93 dB

Size:  530 x 305 x 260 mm (21" x 12" x 10")

 

 

Tannoy Jupiter J40 speakers

 

SyncSource time compensated crossovers give realistic three dimensional images.

Soft dome tweeters for accurate high frequency performance with wide dispersion

Specially shaped acoustic matching plate provides smoother high frequency response

Heavy-duty internal wiring reduces resistance losses.

 

Polyolefin copolymer bass cone, 40 mm (1-1/2") voice coil and dust dome size matched to system characteristics, gives full bass performance without colouration

Walnut veneered, birch plywood cabinet with heavy bitumen damping, eliminates cabinet resonances.

Performance

Power Handling:  10 -120 watts

Sensitivity:  91 dB

Size:  580 x 310 x 280 mm (23" x 12" x 11")

 

Luxman PD-272 turntable

Direct-Drive Turntable

A new direct-drive turntable from Luxman at a modest price. A brushless and slotless DC servo motor and a straight, low-mass tonearm offer superb Wow and Flutter no more than 0,03% and excellent Signal-to-Noise Ratio at 60 dB

Brushless and Slotless DC Servo Motor

Excellent woa and flutter characteristic together with stable rotation are assured by adopting a Brushless and Slotless DC Servo Motor in which slots are completely removed to eliminate unevenness of rotation caused by electro-magnetics, and further a turntable platter of high inertia makes it possible to distribute the large mass of platter weight around the outer contour.

Straight0Type Tonearm

A straight type tonearm is adopted to eliminate resonance caused by lack of intensity which tends to be found on the tonearm exclusively designed for high compliance type cartridge, and at the same time the root of the tonearm is of double-pipe structure to strengthen anti-resonance affect.

Further, the cartridge shell is integrated to the tonearm, thus resonance is suppressed down to the minimum. Also such problem as poor contact of cartridge terminals is removed.

 

Acrylic Dust Cover

For the dust cover, an acrylic resin is adopted which provides a very smooth surface and excellent characteristic against acoustic, feedback. The entire cover is detachable with semi-free-stop hinges.

Ultra Thin Type OI Core Transformer

An ultra thin type OI core transformer of the least-leakage flux, it adopted which is smoothly housed in the smart chassis. This contributes to the realization of stable rotation and excellent signal-to-noise ratio.

Platter Mat

The platter mat is so designed as to realize firm retention of the disc. To minimize unnecessary space between disc and platter mat, the plane is procured between the two by making the contour of platter mat suitable to that of disc.

Of course the platter mat not only damps discs but the platter itself thanks to high density rubber material, and further it is exactly inlaid to the turntable platter. The surface with special treatment ensures superb contact to discs.

 

Functions

A unique switch controls both power turn-on and turn-off and speed selection through the use of a single switch. A stroboscope of mirror reflex type, oil damped cueing system, anti-skating device etc, are all ideally arranged based upon human engineering considerations.

 

Specifications

Phono Motor Section

Driving System:  Direct-drive system

Motor:  DC servo brushless and slotless motor

Turntable Platter:  300 mm aluminium die-cast

Platter Weight:  1,8 kg including mat

Rotation:  33-⅓ and 45 rpm

Adjustable Range of Rotation:  ±4%

Signal-to-Noise Ratio:  no less than 60 dB (IEC-B)

Wow and Flutter:  no better than 0,03% WRMS

Tonearm Section

Tonearm:  Straight arm of static balance type

Effective Length:  240 mm

Tracking Error:  +2° 13'; -1° 08'

Overhang:  15 mm

Cartridge Weight:  4 g - 11 g

Cartridge Height:  13,5 mm - 20,5 mm

Stylus Pressure:  0 - 3 g (direct reading)

Accessories:  Anti-skate Adjustment, Tonearm Elevation

Additional Features

Dust Cover:  Detachable with semi-freestop hinge

Insulator:  Height adjustable

Stroboscope:  Mirror-reflex type

General

Power Consumption:  5 W

Dimensions (W x H x D):  472 x 152 x 348 mm (18-37/64" x 6" x 13-45/64")

Weight:  10 kg (22 lbs) net

 

Infinity Quantum 2 speakers

 

Where in the world can you hear the revolutionary woofer with the dual voice coil? Only in Infinity's Quantum Series. Our Quantum Line Source speaker reaches down to 18 Hz.

Here in its closest competitor, the Quantum 2, it goes to 24 Hz - nut you get an extra 2 dB of efficiency.

And where will you find the satiny sounding Electromagnetic Induction Tweeter (EMIT)/? Only in Infinity's Quantum Series.

The Quantum Line Source stacks them four feet high. The slightly more compact Quantum 2 uses the same tweeters, but not quite so lavishly.

In between those extraordinary, exclusive low and high drivers, both QLS and Q2 use Infinity's high-definition 1-1/2-inch dome midrange driver and transmission-line midbass coupler.

 

What comes out of the Dual-Drive Woofer is a new bass experience

Everybody knew for years it was impossible to get acceptable efficiency, good transient response, enough power, and extended bass range out of any enclosure of reasonable size. So every speaker system in the world represented a serious compromise of one or more of those desirable characteristics. Until, William Watkins found the solution to problems of the speaker's fundamental resonance, back-EMF and the resultant impedance peak. He invented a woofer with two voice coils. Right down where rising impedance and failing response were inevitable before, his second voice coil takes over, presenting a low impedance path to the amplifier in the region of resonance.

Now the speaker can make use of the amplifier's power at low frequencies, because back-EMF is reduced. Now input rather than inherent resonance can control the cone. Now extended bass response and accurate transient performance can co-exist beautifully. The bass driver that makes all this happen is called the Infinity-Watkins Dual-Drive Woofer. It is one of the significant audio advanced that set Infinity's Quantum Series apart.

 

Infinity EMIT is like the sweetest of sopranos without a trace of temperament

Working for years to perfect the electrostatic tweeter for what became our $4000 Servo Statik 1A speaker system, we dreamed of creating the magnetic counterpart of the electrostat. Without any of the same problems of breakdown or need for a transformer. With the same advantages of a low mass diaphragm driven uniformly overall. If only there were a magnet powerful enough. We finally found our magnet, made with the rare-earth material Samarium Cobalt, four to seven times more powerful than the finest alnico magnet.

And then we found we could make a tweeter that was not only easier to control than the electrostatic, but also easier to listen to. With admirable range and realism and nearly perfect horizontal dispersion. This new breed is named EMIT Electromagnetic Induction Tweeter Audio technicians esteem it technically. Music-lovers love it instantly.

 

More than merely a revolutionary woofer and superlative tweeters

High-definition 1-1/2" dome drivers reproduce the midrange in the Quantum Series. And in the midbass (200 to 600 Hz), where about half of all musical fundamentals lie, we felt it vital to provide our Quantum 2, like our Quantum Line Source, with a driver that could speak with absolute accuracy. The answer is our meticulous midbass coupler.

We at Infinity have strong feelings and a goodly store of savvy about phasing and crossover technology. The finest fruits of our stubbornness and know-how are the startlingly lifelike stereo imaging and depth that our Quantum Series speakers produce.

 

Specifications

Frequency Response:  24 Hz - 32 kHz ±3 dB

Horizontal Dispersion:  -2 dB at ±60°, 20 kHz

Suggested for use with amplifiers of 45 through 350 watts per channel RMS

Nominal Impedance:  4 ohms

Drivers

12" Infinity-Watkins Dual-Drive Woofer

4" midbass coupler, transmission-line loaded

Two 1-1/2" dome midrange, specially treated

Three EMIT tweeters

Crossover Frequencies:  200 Hz, 600 Hz and 4000 Hz

Controls:  Level for midbas coupler, midrange and tweeters.

Variable crossover point for tweeter

Dimensions (H x W x D):  1240 x 460 x 330 mm (49" x 18" x 13")

Finish:  Oiled walnut veneer, Removable grille

Weight:  63 kg (138 lbs) packed